[Qgis-user] Polygon digitalization

[Marco Hugentobler]

Hi Stefan

Did you try a developer version (e.g. nightly build)? I think my 
workaround does solve the problem for most usages. It does not solve the 
problem only if you do avoid intersection to background layers and those 
layers are not editable.

>I would really love to see a propper fix for that and that
>digitizing can not silently end up in incorrect results.

Then you might consider contributing to the geos project 
(http://trac.osgeo.org/geos/).

Regards,
Marco

Am 19.03.2013 21:11, schrieb SBL:
> Hi Bert
>
> I know quite a few people (including me) who ran into the same, pretty
> anoying, problem.
>
> And in general it is a known issue. See: http://hub.qgis.org/issues/2921
> Did I understand you correctly that you already tried the workaround Marco
> suggests at the end of the ticket? This would indicate that activating
> topological editing is not enough (at least not in QGIS 1.8)...
> Did you also try activating snapping on lines and nodes as well?
>
>  From my personal point of view this issue is a mayor obstacle of using QGIS
> for digitising (though the digitising functions otherwise are really good
> and handy). I would really love to see a propper fix for that and that
> digitizing can not silently end up in incorrect results.
>
> At least you could clean your already digitised and incorrect data using
> GRASS and the topological vector format there...
>
> Cheers
> Stefan
>
>
>
> --
> View this message in context: http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5041455.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user


-- 
Dr. Marco Hugentobler
Sourcepole -  Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee